• although embryonic nodal cilia rotate as rapidly as those of wild-type embryos, the nodal flow is less smooth, much slower than normal, and more turbulent resulting in a slow net leftward transport in the node

• development of nodal flow arrests at nodal stage 3 or 4 and does not proceed to nodal stage 5

• although embryonic nodal cilia rotate as rapidly as those of wild-type embryos, the nodal flow is less smooth, much slower than normal, and more turbulent resulting in a slow net leftward transport in the node

• development of nodal flow arrests at nodal stage 3 or 4 and does not proceed to nodal stage 5